phpApacheBrowser: Another web based file management app, but this one requires PHP5.
Conflux: A groupware package in Python with PostgreSQL as the backend. Certainly looks neat.
Parrot 0.1.1: Slashdot coverage of Parrot 0.1.1 release. I think the potential for a common base among so many languages (Perl, Python, Ruby, PHP, etc) could be quite exciting. Unless it gains some serious momentum though I don’t see it happening anytime soon.
OpenGroupware: More groupware goodness. I’d passed on this one in the past, maybe now is a good time to go back and take another look.